Synthetic utility of dizinc reagents derived from 1,4-diiodo- and 1,4-dibromooctafluorobutane
摘要:
A modified procedure to prepare [(MeCN)(2)Zn((CF2)(4))(2)Zn(MeCN)(2)] has been developed that allows for more reproducible yields of novel organofluorines during cross-coupling protocols. Additionally, the related reagent [(diglyme)BrZn-(CF2)(4)-ZnBr(digylme)I has been prepared and was shown to be similarly active for [C4F8] transfer to both organic and inorganic substrates. The di(zinc halide) reagent is operationally simple to prepare using inexpensive and easy to handle zinc metal. (C) 2014 Elsevier B.V. All rights reserved.
Facile synthesis of heavily-substituted alkynylpyridines via a Sonogashira approach
作者:Yilmaz Kelgokmen、Metin Zora
DOI:10.1039/c5ra21701f
日期:——
A robust synthesis of highly-substituted alkynylpyridines via a Sonogashira approach is described, providing a library of functionalized pyridines for biological studies.
通过Sonogashira方法合成高度取代的炔基吡啶,提供了一系列功能化吡啶用于生物研究。
Palladium-catalysed aminocarbonylation of diiodopyridines
The aminocarbonylation of 2,5- and 2,3-diiodopyridine, as well as 2-chloro-3,4-diiodopyridine with carbon monoxide and various primary and secondary amines was carried out using palladium-catalysed aminocarbonylation. The formation of the products containing carboxamide and ketocarboxamide functionalities was accompanied by the formation of imides when ortho-diiodo compounds were used as substrates
[EN] REAGENTS AND METHODS FOR FLUORINATING A SUBSTRATE<br/>[FR] RÉACTIFS ET PROCÉDÉS DE FLUORATION D'UN SUBSTRAT
申请人:UNIV LEHIGH
公开号:WO2015006278A1
公开(公告)日:2015-01-15
Described herein are perfiuoroalkylated zinc compounds having the structure of Formula (I) or Formula (II), which can be used to · perfluoroalkylate organic, inorganic and organometallic substrates. Methods of making and using these compounds by reacting zinc or a dialkylzinc compound with a perfluoroalkyl dihalide in a solvent such as tetrahydrofuran, dioxane or diglyme, are also described.
Mild, Safe, and Versatile Reagents for (CF<sub>2</sub>)<sub><i>n</i></sub> Transfer and the Construction of Fluoroalkyl-Containing Rings
作者:Peter T. Kaplan、Long Xu、Bo Chen、Katherine R. McGarry、Siqi Yu、Huan Wang、David A. Vicic
DOI:10.1021/om401016k
日期:2013.12.23
The preparation of new dizinc reagents [(MeCN)(2)Zn((CF2)(n))(2)Zn(MeCN)(2)] (n = 3, 4, and 6) is reported. We show that the C4 reagent can readily transmetalate nickel to form a mononuclear perfluoronickela-cycle. We also demonstrate that the reagents can be used to prepare novel fluoroorganics containing either perfluoroalkyl ring systems or perfluoroalkyl linked arenes under relatively mild conditions.
YAMAMOTO, YUTAKA;YANAGI, AKIHIKO, CHEM. AND PHARM. BULL., 1982, 30, N 5, 1731-1737